Composition of matter



Patented September 20, 1904.

PATENT FFICE.

LUDWIK CHAMPOWICH, OF NEW BRITAIN, CONNECTICUT.

COMPOSITION OF MATTER.

SPECIFICATION forming part of Letters Patent No. 770,675, dated September 20, 1904. Application filed March 19, 1904. Serial No. 199,053. (No specimens.)

To all whom it ITLLLZ/ concern:

Be it known that I, LUDWIK CriAurowioi-i, a citizen of the United States, residing in New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Compositions of Matter, of which the following is a specification.

This invention relates to and has for an object to provide a composition of matter for the securement of various devices in sockets or recesses, and more particularly for fastening the shanks into door-knobs. The component parts of the mixture or composition are rosin, black-lead, and sand, particularly such sand as has been used in foundry-work and has intermixed with it more or less iron in finelycomminuted particles. Molding-sand, which has been used for rolling or tumbling iron castings, sea-sand, facing-sand, or any other sand having the requisite fineness and sharpness of grain may be used. Ihave found that this mixture will hold the shanks firmly and solidly in the knobs at a much less expense and as .efiiciently as does lead and is more easily heated by steam, gas, hydrocarbonburner, or molten lead, and run into the knobcavities and that this composition has the further advantage that it will not tarnish the finest plating or polished surfaces of metals as do other compositions.

I have found in practice that the following proportions will give satisfactory results namely, ten parts rosin, six parts black-lead, and five parts of sand.

Having thus described my invention, I claim 1. A composition of matter which consists of rosin, black-lead and sand.

2. A composition of matter which consists of ten part srosin, six parts black-lead and five parts of sand incorporated with iron.

LUDWIK CHAMPOWICI-I.

Witnesses:

MARY BISSELL, HENRY BIssnLL. 

